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0.045 2);--color-vacation:oklch(62% 0.14 74);--color-vacation-soft:oklch(88% 0.05 74);--color-extra-study-primary:#8b5e3c;--color-extra-study-secondary:#c26a3d;--color-extra-study-accent:#b08968;--color-extra-study-error:#c94f3d;--color-study-card-disabled-copy:var(--color-ink);--color-study-card-disabled-start:oklch(80.7796% 0 0);--color-study-card-disabled-end:oklch(70.5757% 0 0);--color-lesson-card-start:color-mix(in oklch,var(--color-brand) 88%,var(--color-surface));--color-lesson-card-end:var(--color-brand);--color-review-card-start:color-mix(in oklch,var(--color-accent) 86%,var(--color-surface));--color-review-card-end:var(--color-accent)}*,:after,:before{box-sizing:border-box}body,html{overflow-x:clip}html{color-scheme:light;background:var(--color-paper)}html[data-theme=dark],html[data-theme=midnight]{color-scheme:dark}body{margin:0;min-width:min(20rem,100%);background:var(--color-paper);color:var(--color-ink);font-family:var(--font-body);font-size:var(--text-base);line-height:1.5;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased}:lang(ja){font-family:var(--font-japanese)}button,input,select,textarea{font:inherit}input,select,textarea{outline:2px solid transparent;outline-offset:1px}input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--color-focus);outline-offset:1px}[aria-disabled=true],button:disabled,input:disabled,select:disabled,textarea:disabled{cursor:not-allowed}a,button{-webkit-tap-highlight-color:transparent;touch-action:manipulation}a{text-decoration:none}a,button{color:inherit}img,svg{display:block;max-width:100%}h1,h2,h3,p{margin:0}h1,h2,h3{font-family:var(--font-display);font-style:normal;line-height:1.2;letter-spacing:-.02em;overflow-wrap:anywhere;min-width:0}h1[id],h2[id],h3[id]{scroll-margin-top:4.5rem}::selection{background:var(--color-accent);color:var(--color-accent-ink)}:focus-visible{outline:2px solid var(--color-focus);outline-offset:2px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.page{width:min(100%,var(--content-max));margin-inline:auto;padding:var(--space-md) var(--page-gutter) calc(var(--space-3xl) + 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